Drive or Fly: Post Falls, ID to Boise, ID?

Side-by-side comparison of driving versus flying for this route. Costs, time, and trade-offs at a glance.

Driving wins

Medium

No scheduled commercial flights found for GEG–BOI. At 445 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

8h 12m

Distance

445.5 mi

Total Cost

$134

CO2

180 kg

Cost Breakdown

Diesel$99

Hotel (1 room, 0 nights) $0

Meals (1 pax, 1 day) $35

+ No luggage restrictions or TSA lines

+ Comfortable one-day drive

+ Stop anywhere along the route

+ Have your own car at the destination

+ Likely faster door-to-door than flying

− Driver fatigue on longer stretches

− Wear and tear on vehicle

− Fuel price fluctuations

Plan the drive

Fly

Door to Door

3h 26m

34m in the air

Air Distance

286 mi

Total Cost

$186

CO2

73 kg

Door-to-Door Timeline

Post Falls, ID → GEG 42m

Check-in & Security 90m

Flight 34m

Arrival & Baggage 30m

BOI → Boise, ID 10m

Cost Breakdown

Ticket (1 pax @ $131) $131

Rental car (1 day)$55

Airports

Post Falls, ID GEG — Spokane International Airport 28 mi, ~42m drive

Boise, ID BOI — Boise Air Terminal/Gowen Field 4 mi, ~10m drive

No scheduled flights found

No commercial flights between GEG and BOI. Flight estimates above are theoretical.

+ Saves about 4h 46m compared to driving

+ Less physical fatigue

+ Predictable arrival time

− Airport security and check-in overhead

− No scheduled commercial flights found for this route

− May need a rental car at destination

− Luggage fees and restrictions

− Less flexibility for stops along the way

At a Glance

	Drive	Fly
Door-to-door time	8h 12m	3h 26m
Total cost (1 person)	$134	$186
Carbon footprint	180 kg CO₂	73 kg CO₂
Flexibility	High	Low
Luggage	Unlimited	Restricted
Reliability	Weather dependent	Data unavailable

Drive data: OSRM routing, EIA fuel prices

Flight data: Statistical estimate

Airports: OurAirports

Confidence: Medium — airports identified, fares estimated

Costs are estimates. Actual flight prices vary by airline, date, and booking time. Drive costs based on OSRM routing, EIA fuel prices. Computed Apr 13, 2026.

Decided to drive? See the full trip plan from Post Falls, ID to Boise, ID with stops, fuel costs, and turn-by-turn directions.